Convertible valve.



J. H. ZOBELL. CONVERTIBLE VALVE. APPLICATION FILED ocr, 9. I9Is.

2 SHEETS-SHEET l.

Patented Jan. 22, 1918.

entren stradine "PATENT FllilliE..

JAMES H. ZOBELL, OF CASTLEGATE, UTAH.

CONVERTIBLE VALVE.

Specification of letters Patent.

Patented dan. 22, 191%..

Application filed ctober 9, 1916. Serial No. 124,597.

of Utah, have invented certain new and use- :ful Improvements in 4Convertible Valves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same..

This invention relates to valves and has special reference to a convertible pressure regulating and safety valve adapted espe. ciali y in use in connection with steam pumps and the like. Y

One important object of the invention is toV provide a valve of this class with a reversible body so that the valve seat may be engaged by the valve disk either to open :in one direction or the other.

A second important object of the invention is to provide a Valve of this class with an improved arrangement of spring means for urging the valve disk to or from its seat, the spring means being adjustable so that the force required to open or close the valve may be regulated, the valve being further provided with other means than the adjusting means for the spring' for temporarily increasing or decreasing the tension ot' said spring, the last-mentioned means being arranged to normally keep the sprmg means under a uniform tension after it is set.

`With the above and other objects in view, as will be hereinafter apparent the invention consists in general ot' certain novel de tails of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawing, and specilically claimed.

` ln the accompanying drawing, like characters of reference indicate like parts in the several views; and

Figure 1 is an elevation of the device taken from one end of the valve body. V

Fig. 2 is a similar view taken" from one side of the valve body.

Fig. 3 is a section on the line 3 3 of Fig. Il showing the valve body in one position.

Fig. 4 is a section similar toFig. 3 but showing the valve body in its inverted position.

Fig. 5 is a section on the line 5--5 of Fig. l.

F ig. 6 is a section on the line 6.6 of Fig. 2.

In the embodiment of the invention herein illustrated there is disclosed a valve body 10 provided at each end with suitable means for connectingV a pipe thereto as indicated at 11. Extending across this valve body is the usual diaphragm 12 provided with an opening 13 therein, the diaphragm being formed at one side of the opening to constitute a valve seat whereon may seat a valve disk 14. At each side of the valve body 10 there are disposed openings 15 concentric with the opening 13 and one of these openings is closed by a blind flange 1G while the other opening is closed by a bonnet 17 having the usual stuffing box 18. Through the stutiing box 18 passes a valve stem 19 carrying the valve disk 14. 1t is to be noted that the stutiing box and its bonnet are secured to the body by means of bolts 19 while the blind flange is secured by bolts 20. These bolts engage similarly spaced openings in the bonnet and blind flange, the bolt holes in the body being the same on cach side so far as regards their spaced relation. By this means the flange 1G may be secured to the valve casing on either side of the diaphragm 12 and the same is true of the bonnet 1T. When positioned at one side the valve disk 1l will lie below the diaphragm l2 with relation to the bonnet while when the bonnet is placed on the other side of the body the disk will lie closer to the bonnet than the diaphragm, these positions being shown in Figs. 3 and el, respectively.

Extending from the body in parallel relation to the stem 19 and in the same direction as said stem is a pair of spaced rods 2l having their lower ends threaded as at 22 and their upper ends threaded as at 23. On the threaded portions 23 are nuts 2l whereon rests a bed plate 25. On this bed plate is positioned a second plate 26 which carries a cylinder 27 opened downwardly and into which the valve stem 19 passes, the stein being provided on the end within the cylinder with a piston 28. Nuts 29 hold the cylinder in position on the bed plate 25. Furthermore there is provided in the cylinder a pipe connection 30 so that the pipe may be connected thereto and led to the reservoir or the like, the pressure in which it is de sired to regulate. It is to be understood, at this time, that the connections 11 are for lill@ the steam or power lines. Between the bed plate 25 and the bonnet 17 there is fixed to the stem 19 a transverse plate 31 carrying a spring seat 32. Sldable on the stem 1.() and therods 21 is a plate 33 carrying a spring seat 34. This plate 33 is adjusted to or from the plate 31 by means of nuts 35 engaged onthe threaded portions 22. VBetween the spring seats 32 and 34 is a coil spring 36 which normally holds the plate 33 against the nuts 35. Now itwill be obvious Vthat by means of these nuts 35 the adjust- Y ment of the tension on the spring 36 may be effected. In order to manually change the position of the valve stem, and consel quently the valve, without interfering with the adjustment of the spring 36 the plate 31 is connected t0 a plate 3T which passes transversely across the valve body on the side carryingy the plate 16 by means of bolts 38. Furthermore through the plate V37 passes a hand screw 39 the point of which bears against the plate 16 so that by rotatf ing'th'is'screw in one direction the plate 3l shown in Fig. 3 and the connection'30 con-V nectcd to the'reservoir or other receptacle the pressure of which it is desired to maintain below a Vcertain point. In like manner the left handV end of the valve body is'con- Y nected 'to this vessely or reservoir and the Iso spring 36 so adjusted that the downward Vpressure on the piston 28 will beex'ceeded byl the upward pressure of the spring 36 to -the required amount of `pressure to be maintained. 'When, however, thispressure is'eXceeded then the piston 28 wllbe forced downagainst the action of the spring 36 landv the valve disk 14 carried down with the valve stem so that the valve-will be opened. When the pressure again drops the parts resume their normal positionV such as is shown in Fig. 3. When the valve is arranged for a pressure regulating' valvefthe parts are positioned as in lFig. 4, the right hand end being. the inlet end of the valve. It will be obvious that in this position the valve will normally be opened or partly opened-butincrease of pressure in the cylinder which is connected to the reservoir, will partly close the valve vand thus 'cut olf steam from the pump. Vice versa, decrease of pressure will open the valve morey and let the pump run faster.

" LThere has thusbeen Vprovided a rsimple of the invention without departing from the kcome within the scope claimed.

and efiicient device of the kind` described and for Ythe purpose specified.

Itis obvious that many minor changes may -be made in the form and construction material principles thereof. It is not therefore desired toV confine the invention to the exacteform herein shown and described but it is wished to include allsuch as properly Having thus described the inyentiomwhat ing a valvebody Ahaving` a diaphragmfintermediate its ends-and,provided with'anopenso ing surrounded bya valve seat and the body having lateral' openings, ,'abonnet, a 'blind flange, means to interchangeably secure said bonnet andfflange'to tlie'body ltOcover'said openings, a stem extending ,through thebonf net, a valvecarried by the Stemand adapted for engagementwith saidfjse'at on Aopposite sides thereof, y a' yoke'fattached to j the Astem and supported by the 'valvep'body, a plurality 'of screw threaded standardscarried by the valve body in 'a plane at right angles tothe yoke, adjustable `means carried by said Y standards', and a spring",mountedbetween thefadjustable means carried bythe standards -andone end'ofthe yoke formoving the valve stern in one direction. Y i 2. yA. Adevice vofthe kind described including a valve body provided with a 'passage affording Vcommunication Vbetween the.l ends of saidbody, amvallvie controllingthe said 1100 passage, a Ypair of screw threaded Ystandards projecting fromthe valve body', a'plate slid- Vably carried on said screwfthre'adedjstandards',a yoke attached toj-thefstemandsupported by' thelvalve body and saidstandards, .105 a spring interposed" between theV slidable plate andone Aend lof the yoke to move the valve in one direction, and a means formovl ing said slidable; platefforl 'adjusting the tensionlof said'sp'ring.

Y V Aldevice of the kindldes'cribed including a valveib'odyV- provided 'withfapassage affording `*comininication Vbetyveen theV ends of saidv body, a yvalve controlling said passage, spring means connected-,with said valve and'urging the same in one direction, A a Huid pressure device urgingf'saidvalvein the opposite direction and having connection with said valve,'a tensioning deviceforlregulating thev tension o fsaid springmeans, and means tomvary theftensionhfof thefvspring means independently 'of thev tensioning v.de-

vice.

.4. A vdevice ofthe kind duescribed.l including a valve :body providedwith'a passage 125 affording communication between the Vends of said body,l a lvalve controlling :said passage, a bonnet on -said body, avvalve stem passing through s aidbonnet and Carrying the valve, a plate i extending transversely '-130 across the body on the side opposite the bonnet, a screw passing through said plate and engaging the body to vary the distance between said plate and body, rods rigidly connected to the body and extending therefrom parallel to the valve stem, a fluid pressure chamber provided with pipe connecting means and mounted on said rods in spaced relation to the body, said valve stem extending into the fluid pressure chamber, a piston on said Valve in said chamber, a plate fixed to the valve stem transversely of the body and adjacent the chamber, bolts connecting said plates to hold the same in fixed spaced relation, a. third plate slidable on 115 valve stem between the second and third 20 plates and bearing thereon.

In testimony whereof, I affix my signature, in the presence of two Wltnesses.

JAMES H. ZDBELL.

VVtnesses:

J. A. THORPE, `W. N. WALTERS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner o Patents, Washington, D. C. 

